Region of Interest Not Supported Error with Vision Assistant Step in Vision Builder

Updated Apr 3, 2018

Reported In


  • Vision Builder for Automated Inspection
  • Vision Assistant

Issue Details

I want to set a region of interest for my Vision Assistant step in Vision Builder, but when I try to save the step I see an error that indicates the region of interest is not supported. I've been able to set a region of interest before, why can't I set one now?


This error occurs when the image size or type changes during the Vision Assistant steps when a region of interest is selected. Color Threshold and Extract Color Plane are Vision Assistant steps which change the type of the image, and may cause this error to occur. To correct this error, use the Full Image Region of Interest setting for the NI Vision Assistant Step. If a smaller region of interest is desired, it can be specified by using the Create Region of Interest step immediately after the Vision Assistant step.


Not Helpful